USING GRYPHON™ D432/D432E

bright objects inside the image will be better distinguishable. Default value is 0%, which means that no contrast adjustment is performed.

You can set the Image Color Depth by selecting 256 gray levels (default), 16 gray levels, or 2 gray levels. Higher color depths yield larger image files. This option is ignored if the JPEG format is selected, (256 gray levels only).

3.4AUTOSCANNING

3.4.1Normal Mode

Gryphon™ D432/D432E provides an autoscan command (see page 70), which when enabled, causes the reader to scan continuously and to monitor the central zone of its reading area. In this way, Gryphon™ D432/D432E is ready to capture any image (containing a potential code) positioned on a uniform background.

The aiming system can be enabled to indicate the reading area of the potential code to be captured. The illumination system can also be enabled when the ambient light conditions are not sufficient to autodetect the potential code to be captured; furthermore, the illumination system increases in intensity for an instant when capturing and decoding an image. A safety time may be defined to prevent Gryphon™ D432/D432E from reading the same code repeatedly.

If the decoding is completed successfully, the reader starts monitoring the reading area again. In case of decoding failure, Gryphon™ D432/D432E keeps on decoding until a potential code is present in the central zone of the reading area.

3.4.2Pattern Mode

The Autoscan pattern mode is particularly advised when reading barcodes positioned on a non-uniform background. In these cases Gryphon™ D432/D432E may perceive some elements of the background as barcodes and start the decoding. To avoid this undesired effect, the Autoscan Pattern Code is placed in the Gryphon™ D432/D432E reading area which prevents decoding. Using this code as the background, code reading takes place normally by presenting desired codes to be read over the Pattern Code. Between each code read, the Pattern Code must be represented to Gryphon™ D432/D432E.

The Pattern Code can be printed from the file of the manual (Appendix D) available on the CD-ROM.

In case of low ambient light conditions, Gryphon™ D432/D432E automatically activates the illumination system. If desired, the illumination system can be enabled so that it is always active.

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